Microwave shows dE or DE and beeps; door appears closed but unit will not run.

Safety first: Unplug the microwave before any physical adjustment.

Door inspection:

• Check that nothing is trapped between the door and the cavity (e.g., towel, packaging).
• Open and close the door firmly; listen for a solid click from the latch area.
• Inspect the plastic latch hooks on the door for cracks or wear.

Hinge and alignment:

• Check that the door is level and not sagging. If it is, gently lift the door while closing to see if the error clears.
• If the hinges are loose, tighten the mounting screws (if accessible).

If the error persists, one or more door switches or the latch assembly may need replacement. This requires removing the outer cover and working near high-voltage components; professional service is recommended.